On my site user can register successfully but can't login first time.i checke user manager from backend and the user is enabled and activated still the user can not login.I have to manually enter new password then user can able to login....

I have create my own component and create install package,when i install component it gives error "JInstaller::install: File '/com_mycomponent/admin/site/controllers' does not exist.".i don't know why this happening...